Git format and protocol in pure OCaml

Support for on-disk and in-memory Git stores. Can read and write all
the Git objects: the usual blobs, trees, commits and tags but also the
pack files, pack indexes and the index file (where the staging area
lives).

All the objects share a consistent API, and convenience functions are
provided to manipulate the different objects. For instance, it is
possible to make a pack file position independant (as the Zlib
compression might change the relative offsets between the packed
objects), to generate pack indexes from pack files, or to expand
the filesystem of a given commit.

The library comes with a command-line tool called ogit which shares
a similar interface with git, but where all operations are mapped to
the API exposed ocaml-git (and hence using only OCaml code).